Unit 2 Muscles Flashcards

1
Q

locate and describe the functions the muscles in the arm

1.biceps brachii
2. tricep brachii

A

1.biceps brachii:
location: anterior side of the body
function: flex the elbow
2. tricep brachii:
location: posterior side
function: extend the arm

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2
Q

locate and describe the functions the muscles in the rotateor cuff

  1. supraspinatus
  2. subscapularis
  3. infraspinatus
  4. teres minor
A

Major function: stabilizes shoulder joint

  1. supraspinatus
    location: top of scapula kinda anterior
    function:abduction of the arm
  2. subscapularis
    Function: internal rotation
  3. infraspinatus
    Located: basically on the scapula
    Function: rotation and extension of the shoulder
  4. teres minor
    Location: side of scapula
    Function: laterally or externally rotates the arm
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3
Q

locate and describe the functions the muscles in the back

  1. Trapezius
  2. Rhomboid Major
  3. Latissimus dorsi
A
  1. Trapezius
    Location: across spine in the shape of a trapezoid
    Function: stabilizing, elevating, depressing, and retracting the scapula
  2. Rhomboid Major
    Location: Next to spine
    Function: downward rotation of scapula, adduction, or retraction of the scapula
  3. Latissimus dorsi
    Location: entire lower back
    Function :adductor, extensor, and internal rotator of the arm.
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4
Q

locate and describe the functions the muscles in the anteror torso

  1. Pectoral Major
  2. serratus anterior
  3. rectus abdominis
  4. External oblique
A
  1. Pectoral Major
    Function: internal rotation, adduction, and flexion of the arm
  2. serratus anterior
    Location: Ribs close to scapula
    Funcation: move and lift scapula
  3. rectus abdominis
    Location: abbs
    Function: flex trunk
  4. External oblique
    Location: side of abbs
    Function: twisting the trunk
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5
Q

locate and describe the functions the muscles in the Quadriceps

  1. rectus femoris
  2. vastus lateralis
  3. vastus medialis
  4. vastus intermedius
A

Location: Anterior upper thigh

  1. rectus femoris
    Function: flexes the thigh and extends at the knee joint.
  2. vastus lateralis
    Function: extending the knee
  3. vastus medialis
    Function: flex the knee
  4. vastus intermedius
    Function: flex the knee
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6
Q

locate and describe the functions the muscles in the Hamstrings

  1. Bicep femorus
  2. Semimembranosus
    3.Semitendinosus.
A

Location: Posterior upper thigh
1. Bicep femorus

  1. Semimembranosus
    Function: flex knee, rotate knee inward, and extends hip
  2. Semitendinosus
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7
Q

locate and describe the functions the muscles in the lower leg

  1. tibus Anterior
  2. soleus
  3. gastrocnemius
A
  1. tibus Anterior
    Function: dorsi flextion
  2. soleus
    Function: planter flextion
  3. gastrocnemius
    Function: planter flextion
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8
Q

locate and describe the functions the misalianous muscles

  1. sternocleidomastoid
    2.sertuis
    3.Deltiod
A
  1. sternocleidomastoid
    Function: Neck extension and flexion, tits head back

2.sertuis
Function: hip flexion and outward

3.Deltiod
Function move arm

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9
Q

What is the Origins and insertions of the Deltoid?

A

Origin:
1.lateral part of the clavicle
2.the spine
3. acromion process of the scapula

Insertion: tuberosity of the **humerus

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10
Q

What is the Origins and insertions of the Biceps Brachii?

A

Origin: Scapula

Insertion: Radius

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11
Q

What is the Origins and insertions of the Rectus Abdominis?

A

Origin: Pubic crest (on the ilium)

Insertion:
1. Xiphoid process
2. ribs

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12
Q

What is the Origins and insertions of the Sartorius?

A

Origin: iliac spine(ilium)

Insertion: tibia

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13
Q

What is the Origins and insertions of the Latissimus Dorsi?

A

Origin:
1. spine
2. scapula

Insertion: Humerus

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14
Q

What is the Origins and insertions of the Tibialis Anterior?

A

Origin: Tibia

Insertion: Metatarsal

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15
Q

What is the Origins and insertions of the Triceps Brachii?

A

Origin:
1. Scapula
2. Humerus

Insertion: Ulna

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16
Q

What is the Origins and insertions of the Gastrocnemius?

A

Origins:
1. Tibia
2. fibia

Insertion: Achilles tendon

17
Q

ligaments vs tendons

A

Ligaments: bone on bone action

tendons: muscle on bone action

18
Q

Sliding filament theory

A
  1. neural impulses is sent
  2. trigger releases calcium
  3. calcium removes proteins
  4. Myosin forms a cross bridge
  5. Myosin pulls (Power stroke)
  6. ATP repeat
  7. My son continues power strokes
  8. muscle is fully contracted
  9. calcium is removed
  10. we all good
19
Q

Types of joints
(1-6)

A
  1. ball-and socket
    -most articulate (shoulder, and hips)
  2. sliding
    -least articulate (in foot)
  3. Hinge
    -(elbows and knees)
  4. piviot
    -(neck)
  5. Saddle
    (thumb)
  6. Ellpois
    (wrist)
20
Q

Characteristics of Synovial Joints

A
  1. Tendons
  2. Ligaments
  3. cartilage
  4. synovial membrane
  5. joint capsule
  6. joint cavity
  7. nerves
  8. blood vessels